JP2002100081A - Vtr tape traveling controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a VTR tape traveling controller capable of preventing any waste of time for listener by making the unrecorded part run at a high speed and starting the reproduction as soon as approaching a recorded part during the skip searching of the recorded information. SOLUTION: This VTR tape traveling controller is provided with a signal detecting means 5 for detecting a control signal recorded on a magnetic tape 1 and outputting a detected signal, and a search key 8a for outputting a command signal for executing the searching operation of the information recorded on the magnetic tape 1 only for search time preset to each operation. In this case, a control means 10 is provided to execute control for starting the searching operation according to the operation of the search key 8a. Counting of the search time is temporarily stopped when no detected signals are inputted from the signal detecting means 5, and then the time counting is resumed when the detected signal is inputted, and the reproducing operation of the recorded information is started when the searching time terminates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape drive control device for a VTR having a skip search function for automatically searching recorded information on a magnetic tape for a time corresponding to the number of key input operations. The present invention relates to a VTR tape traveling control device capable of varying the traveling speed of a magnetic tape.

[0002]

2. Description of the Related Art A widespread VTR has the same portion as a recorded portion during a play search when there is a non-recorded portion on a magnetic tape on which no television program or the like is recorded or a blank exists between programs. The running of the magnetic tape is controlled at the speed. At this time, since the non-recorded portion and the blank are reproduced as meaningless images on the TV screen, the user has to spend time unnecessarily until the next image is displayed. Then, the inventors have previously proposed a tape running control device of a VTR for the purpose of greatly shortening a search time at the time of searching and reproducing a magnetic tape (see Japanese Patent Application Laid-Open No. 2000-11487).

[0003] In reproducing the information recorded on a magnetic tape, when a detection signal is input from a signal detecting means, a speed varying means is operated to set a running speed of the magnetic tape to a normal speed. When the detection signal is not input, the running speed of the magnetic tape is changed to be higher than the normal speed. Therefore, when there is a blank portion or blank of the information on the magnetic tape, the detection information is not input, and after the magnetic tape is sent at a high speed, the next information is reproduced early, so that the user wastes time. There is an advantage that it is not necessary. However, since the tape drive control device of this VTR does not have a skip search function, it is not possible to easily skip commercials recorded between television programs, blanks between programs, and the like.

That is, in the skip search function, a dedicated skip search key is provided in the remote control transmitter, and when the skip search key is operated, a command signal is given to the control unit. This control unit
A video signal detection unit comprising a microcomputer and having a timer and a time counter for reproducing the video signal recorded in the video signal area of the video tape 1 shown in FIG. 3, and reproducing the control signal recorded in the control signal recording area The outputs of the CTL signal detectors are connected to each other. In addition to controlling basic operations such as reproduction and recording based on a command signal from a remote controller, each time the skip search key is operated once, a preset search time (normally, 30 seconds) is counted and counted. The control signal search operation is started.

[0005] For example, when a plurality of television programs are recorded on the video tape 1 and the user wants to listen to the next program after the program currently being watched, the user operates a skip search key of the remote controller. At the end of a TV show,
Since a CM (commercial) of about one minute is recorded, the skip search key is generally operated twice in order to skip this. The control unit uses this 2
Search time (60 seconds) after receiving a search command signal
At the same time, the output signal of the CTL signal detector is checked to search for the presence or absence of a video signal. When this search operation is started, if a video signal is recorded in the video signal recording area of the video tape 1, CTL
Since a control signal is also recorded in the signal area (indicated by a black dot in the figure), a digital CTL detection signal is sequentially input to the controller. On the other hand, when the video signal is interrupted and becomes a non-recording portion (corresponding to a blank portion of the CTL signal area in the figure), the CTL detection signal is not input to the control unit, and thus the reproduced image is displayed on the screen of the television. Disappears. During this time, the control unit counts the search time and continues the search operation, so that the video tape 1 keeps running at a constant speed. And the time count is 6
When the search reaches 0 seconds and ends, the search operation shifts to the reproduction operation.

[0006]

By the way, the above-mentioned conventional tape running control device of a VTR continues the search operation until the search time expires even if the video signal is a non-recorded portion, and at the time of the expiration the reproduction operation is continued. Since the operation shifts to an operation, a state occurs in which no image is displayed on the television screen. Then, the image is gradually displayed when the next recording portion is reached, and during this time, the user has to spend unreasonably. Also, since the video tape continues to run at a constant speed even in the non-recorded part, there is a problem that time is wasted as the non-recorded part becomes longer, and the user has a feeling of frustration and discomfort. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems. At the time of skip search of recorded information, a magnetic tape is caused to run at a high speed in a non-recorded part of information, and the information is recorded at an early stage when reaching the recorded part. An object of the present invention is to provide a VTR tape traveling control device in which a viewer does not waste time by starting reproduction.

[0008]

According to one aspect of the present invention, there is provided a signal detecting means for detecting a control signal recorded on a magnetic tape and outputting a detection signal. A search key for outputting a command signal for performing a search operation of the recording information of the magnetic tape for a preset search time for each operation.
In the tape running control device of R, the search operation is started in response to the operation of the search key, the counting of the search time is started, and when the detection signal is not input from the signal detecting means, the time count is temporarily stopped. After the stop, when the detection signal is input, the time counting is restarted, and control means for performing a control to start a reproduction operation of the recorded information when the search time has expired is provided. . The invention according to claim 2 is characterized in that, when the control means stops counting the search time, the control means performs control to change the traveling speed of the magnetic tape to a speed higher than a normal speed. It is.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an electrical block diagram showing a tape running control device of a VTR according to the present invention. This VTR has information recording /
A control unit 10 for controlling the magnetic head 2 and the CTL detection head 3 of the reproducing system, the reel motor control circuit 6 and the tape running mechanism 7 of the servo system, and the information recording / reproducing system and the servo system.
And the like, and the traveling speed of the cassette type video tape 1 is controlled by a transmission signal from the remote controller 8.

The magnetic head 2 is connected to a control unit 10 via a video signal detection unit 4, and the CTL detection head 3
It is connected to the control unit 10 via the L signal detection unit 5.
The reel motor control circuit 6 is connected to the control unit 10, and the output of the reel motor control circuit 6 is connected to the supply motor 7a and the winding motor 7b of the tape traveling mechanism 7, respectively. The magnetic head 2 reproduces the video signal recorded in the video signal area of the video tape 1 shown in FIG. The video signal detection unit 4 is composed of a video IC, detects a synchronization signal of the video signal, and sends a digital video detection signal to the control unit 10. The CTL detection head 3 is a video tape 1
The control signal (image indicated by a black dot in FIG. 2) recorded in the control signal recording area (CTL signal area) is reproduced and output to the CTL signal detection unit 5.

The CTL signal detector 5 receives a reproduction control signal and sends a digital CTL detection signal to the controller 10. In a non-recording portion where no video signal is recorded in the video signal area,
No control signal is recorded in the control signal recording area (the blank portion of the CTL signal area in FIG. 4), and therefore, no CTL detection signal is output. The reel motor control circuit 6 performs reproduction, fast forward, rewind, index search,
The supply-side motor 7a or the winding-side motor 7 outputs a speed variable signal corresponding to each mode of the play search and the skip search.
b. The remote control 8 is provided with a skip search key 8a that outputs a skip search command signal each time the remote control 8 is operated once, in addition to the function keys provided in the popular VTR.

The control unit 10 is a microcomputer for controlling the operation of the entire apparatus. The control unit 10 is connected to a key input unit and a display unit (not shown) and each of the circuit units in one or two directions according to each function. The operation mode shifts to a predetermined mode in response to operation signals such as recording, reproduction, fast forward, rewind, play search, index search, and skip search transmitted from the input unit or the remote controller 8 via the reception unit 9 to shift to each of the mechanism units. Operation control. The control unit 10 includes a timer 10a for measuring time and a counter 10b for counting a search time and the like. The counter 10b starts counting in response to a skip search command signal that is input each time the skip search key 8a is operated once.
When the search time per time has expired, count-up information is provided to the control unit 10. In this example, the search time per operation is set to 30 seconds in advance.

Next, the operation of the tape running control device of the VTR will be described. When the user wants to appropriately play back a cassette tape in which a plurality of television programs or the like are recorded at random, the video signal recorded on the video tape 1 is sent to the video signal processing circuit by pressing the play key of the remote control after setting the cassette tape. The transmitted image is displayed on the television screen. When the television program is nearing the end, if the user wants to watch the next program, the skip search key 8a is operated twice in order to skip a CM or a blank between programs. When the command signal of the skip search is input twice within a predetermined time, the control unit 10, as shown in FIG.
At the same time, the counter 10b starts counting the search time (60 seconds) and shifts to a skip search operation. Therefore, the CM after the end of the program is not displayed on the television screen.

The control unit 10 includes a CTL signal detection unit 5
And checks for the presence / absence of a video signal. Therefore, if the video signal recording area is the area where the video signal is recorded, the controller 10
TL detection signals are sequentially input. On the other hand, when the video signal is interrupted and reaches the non-recording portion, the CTL detection signal is not input to the control unit 10 as indicated by a blank CTL signal area in FIG. Therefore, when the CM area ends and the input of the CTL detection signal is interrupted, the control unit 10 determines that there is no recording signal at each time, and temporarily stops the search time counting (for example, at the time of 45 seconds). Then, a speed variable control signal is sent to the reel motor control circuit 6.

As a result, the video tape 1 shifts from a constant speed to a high-speed running at the same time as reaching the non-recording portion, so that the non-recording portion, blanks and the like are fast-forwarded at a high speed. Thereafter, when the recording portion of the video tape 1 is reached again, the control unit 10
Since the TL detection signal is input, the control unit 10 determines that there is a recording signal, and sends a speed-variable control signal to the reel motor control circuit 6. Along with this, the video tape 1 shifts from high speed to constant speed running. Further, the control unit 10 causes the counter 10b to restart counting the search time when determining that the recording signal is present. This counter 10b has 45
Since the counting was temporarily stopped in seconds, the counting starts from 46 seconds. When the search time has expired at the 60th second after counting 15 seconds, a count-up signal is output to the control unit 10. The control unit 10 shifts to the reproduction mode immediately according to the count up.

As described above, in the next signal recording portion, the reproduced image is displayed on the television screen after skipping for 15 seconds. Therefore, the user can view the recorded program in a short time after the previous recorded program ends, with the CM skipped. When the user wants to view the recorded program, the skip search key 8a is set to 2
The commercial is skipped for about one minute by performing the operation twice, but the number of times the skip search key 8a is operated may be determined according to the length of the commercial or the blank.

[0017]

As described above, according to the first aspect of the present invention, a skip search in which a search operation of recorded information is performed for a preset search time every time a search key is operated is performed. After the end of the previous recorded program, the CM or the blank between the programs is skipped, so that the next recorded program can be viewed in a short time. Therefore, the problem that the search time expires in the non-recording part and the reproduction operation is started as in the related art, and a meaningless image is displayed and the viewer has to spend unnecessary time is solved. effective. According to the second aspect of the invention, when the counting of the search time is stopped, the running speed of the magnetic tape is changed to a speed higher than the normal speed, so that the time becomes longer as the non-recorded portion becomes longer as in the related art. This has the advantage that the problem of wasting and discomfort to the listener is greatly reduced.

[Brief description of the drawings]

FIG. 1 is an electric block diagram showing a tape running control device of a VTR according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a skip search by the device.

FIG. 3 is an explanatory diagram showing a skip search by a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic tape 5 Signal detection means 8a Search key 10 Control means

Claims (2)

[Claims] 1. A signal detecting means for detecting a control signal recorded on a magnetic tape and outputting a detection signal, and performing a search operation of information recorded on the magnetic tape for a preset search time for each operation. And a search key for outputting a command signal for causing the VTR to perform a search operation in response to an operation of the search key. When no signal is input, after the time count is temporarily stopped, when the detection signal is input, the time count is restarted, and control means for performing a control to start a recording information reproducing operation when the search time expires. And a tape running control device for a VTR. 2. The magnetic apparatus according to claim 1, wherein when the control unit stops counting the search time, the control unit performs control to change the traveling speed of the magnetic tape to a speed higher than a normal speed. Recording and playback device.